Can no longer connect to Home Assistant. Log is telling that ssl handshake failed

Hi,

I am suddenly experiencing some problems while connecting to Home Assistant. Everything was running okay until one day when I couldn’t connect anymore. It is configured on a hassbian running DuckDNS and LetsEncrypt. Below is an excerpt from the logs. It is telling me there are some problems with the ssl handshake.

I am very grateful if anyone would be able to help me.

2018-12-10 15:45:19 ERROR (MainThread) [homeassistant.core] Error doing job: SSL handshake failed
Traceback (most recent call last):
File “uvloop/handles/stream.pyx”, line 609, in uvloop.loop.UVStream._on_eof
File “uvloop/sslproto.pyx”, line 171, in uvloop.loop._SSLPipe.feed_ssldata
File “/usr/local/lib/python3.6/ssl.py”, line 689, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: HTTP_REQUEST] http request (_ssl.c:841)
2018-12-10 15:45:19 ERROR (MainThread) [homeassistant.core] Error doing job: SSL error errno:1 reason: HTTP_REQUEST
Traceback (most recent call last):
File “uvloop/sslproto.pyx”, line 504, in uvloop.loop.SSLProtocol.data_received
File “uvloop/sslproto.pyx”, line 204, in uvloop.loop._SSLPipe.feed_ssldata
File “uvloop/sslproto.pyx”, line 171, in uvloop.loop._SSLPipe.feed_ssldata
File “/usr/local/lib/python3.6/ssl.py”, line 689, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: HTTP_REQUEST] http request (_ssl.c:841)
2018-12-10 15:45:20 ERROR (MainThread) [homeassistant.core] Error doing job: SSL handshake failed
Traceback (most recent call last):
File “uvloop/handles/stream.pyx”, line 609, in uvloop.loop.UVStream._on_eof
File “uvloop/sslproto.pyx”, line 171, in uvloop.loop._SSLPipe.feed_ssldata
File “/usr/local/lib/python3.6/ssl.py”, line 689, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:841)
2018-12-10 15:45:20 ERROR (MainThread) [homeassistant.core] Error doing job: SSL error errno:1 reason: UNKNOWN_PROTOCOL
Traceback (most recent call last):
File “uvloop/sslproto.pyx”, line 504, in uvloop.loop.SSLProtocol.data_received
File “uvloop/sslproto.pyx”, line 204, in uvloop.loop._SSLPipe.feed_ssldata
File “uvloop/sslproto.pyx”, line 171, in uvloop.loop._SSLPipe.feed_ssldata
File “/usr/local/lib/python3.6/ssl.py”, line 689, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:841)
2018-12-10 15:45:41 ERROR (MainThread) [homeassistant.core] Error doing job: SSL handshake failed
Traceback (most recent call last):
File “uvloop/handles/stream.pyx”, line 609, in uvloop.loop.UVStream._on_eof
File “uvloop/sslproto.pyx”, line 171, in uvloop.loop._SSLPipe.feed_ssldata
File “/usr/local/lib/python3.6/ssl.py”, line 689, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:841)
2018-12-10 15:45:41 ERROR (MainThread) [homeassistant.core] Error doing job: SSL error errno:1 reason: UNKNOWN_PROTOCOL
Traceback (most recent call last):
File “uvloop/sslproto.pyx”, line 504, in uvloop.loop.SSLProtocol.data_received
File “uvloop/sslproto.pyx”, line 204, in uvloop.loop._SSLPipe.feed_ssldata
File “uvloop/sslproto.pyx”, line 171, in uvloop.loop._SSLPipe.feed_ssldata
File “/usr/local/lib/python3.6/ssl.py”, line 689, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:841)